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dc.contributor.authorChatrchyan, S.
dc.contributor.authorIşıldak, Bora
dc.date.accessioned2014-11-17T10:24:40Z
dc.date.available2014-11-17T10:24:40Z
dc.date.issued2012-12-01
dc.identifier.issn1550-2368
dc.identifier.urihttp://journals.aps.org/prd/abstract/10.1103/PhysRevD.86.112003
dc.identifier.urihttp://hdl.handle.net/10679/590
dc.description.abstractResults are presented from a search for a fourth generation of quarks produced singly or in pairs in a data set corresponding to an integrated luminosity of 5 fb(-1) recorded by the CMS experiment at the LHC in 2011. A novel strategy has been developed for a combined search for quarks of the up and down type in decay channels with at least one isolated muon or electron. Limits on the mass of the fourth-generation quarks and the relevant Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions. The existence of mass-degenerate fourth-generation quarks with masses below 685 GeV is excluded at 95% confidence level for minimal off-diagonal mixing between the third- and the fourth-generation quarks. With a mass difference of 25 GeV between the quark masses, the obtained limit on the masses of the fourth-generation quarks shifts by about +/- 20 GeV. These results significantly reduce the allowed parameter space for a fourth generation of fermions.en_US
dc.description.sponsorshipBMWF ; FWF ; FNRS ; FWO ; CNPq ; CAPES ; FAPERJ ; FAPESP ; MEYS ; CERN ; CAS ; MoST ; NSFC ; COLCIENCIAS ; MSES ; RPF ; MoER ; SF0690030s09 ; ERDF ; Academy of Finland ; MEC ; HIP ; CEA ; CNRS/IN2P3 ; BMBF ; DFG ; HGF ; GSRT ; OTKA ; NKTH ; DAE ; DST ; IPM ; SFI ; INFN ; NRF ; WCU ; LAS ; CINVESTAV ; CONACYT ; SEP ; UASLP-FAI ; MSI ; PAEC ; MSHE ; NSC ; FCT ; JINR ; MON ; RosAtom ; RAS ; RFBR ; MSTD ; SEIDI ; CPAN ; Swiss Funding Agencies ; NSC ; ThEPCenter ; IPST ; NSTDA ; TUBITAK ; TAEK ; NASU ; STFC ; University of California Institute for Mexico and the United States ; the Marie-Curie programme and the European Research Council and EPLANET ; DOE and NSF ; the Leventis Foundation ; the A. P. Sloan Foundation ; the Alexander von Humboldt Foundation ; the Belgian Federal Science Policy Office ; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture ; the Agentschap voor Innovatie door Wetenschap en Technologie ; the Ministry of Education Youth and Sports of Czech Republic ; the Agence Nationale de la Recherche ANR-12-JS05-002-01 ; the Council of Science and Industrial Research India; the Compagnia di San Paolo ; the HOMING PLUS programme of Foundation for Polish Science cofinanced by EU ; Regional Development Fund."
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.relationinfo:turkey/grantAgreement/TUBITAKen_US
dc.relation.ispartofPhysical Review D
dc.rightsrestrictedAccess
dc.titleCombined search for the quarks of a sequential fourth generationen_US
dc.typeArticleen_US
dc.peerreviewedyesen_US
dc.publicationstatuspublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID(ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora
dc.contributor.ozuauthorIşıldak, Bora
dc.creatorThe CMS Collaboration
dc.identifier.volume86
dc.identifier.issue11
dc.identifier.wosWOS:000312294500001
dc.identifier.doi10.1103/PhysRevD.86.112003
dc.subject.keywordsPP Collisionsen_US
dc.subject.keywordsRoot-S=7 TeVen_US
dc.subject.keywordsFinal-stateen_US
dc.subject.keywordsHeavyen_US
dc.identifier.scopusSCOPUS:2-s2.0-84871203513
dc.contributor.authorMale1


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